Structural dependence of the electrical conductivity of polyethylene terephthalate

Synthesis and Characterization of Some Novel Monomers and Copolyesters Containing Bispyrazole or Bisdihydroisoxazole with Studying the Effect of TiO2 Nanoparticles on their Electrical Conductivity

“…From the electrical conductivity measured, it may be observed that all the samples are semiconducting in nature and the data showed an enhancing in conductivity via. polyester (σ~10-11 ohm-1 cm) (Amborski, 1962;Shahab et al, 2009) or poly azomethine (σ~1.0069*10-9 ohm-1.cm -1 ) (Khattab and Al-Chalabi, 2013) by many order of magnitude. In our opinion, this phenomenon may be explained by two manners: firstly: t he ester group with unshared pair of electrons can lead to a molecular association with the pyrazoline or dihydroisoxazoleheterocyclic among the chain, this will enhance the movement of charge carriers through the polymer chain then increasing conductivity (Su and Kuramoto, 2000).…”

“…The synthesis of electrically conductivities polymers with conjugated -C = C-bonds requires the controlled coupling of a large number of monomers (Khattab, 2007). So, through simple modifications of their molecular structure, their physical and chemical properties can be adjusted in a fairly large range such as definite structures were incorporated in the backbone of the for studying the effect of molecular structure on the electronic, physical and electrical properties of the polymers (Khattab, 2008) also polymer adjustments give methods for studying the effects of chain flexibility (Amborski, 1962), symmetry and molecular hardness on conductivity and knowledge of the structural reliance of conductivity with the mechanism of conduction in polymers will allow the synthesis and manufacture of conductive polymers films (Imam, 2013;Vilcakova et al, 2002), the attention in conjugated polymers has increased because these polymers combine some properties of both metals and polymers (Caseri, 2000).…”

Time domain dielectric response of field grading sleeves subjected to high humidity and temperatures

“…The melting of the crystalline region at higher temperatures, increases the free volume of the system. This increase in free volume can likely facilitate an increase in motion of charge carriers and then higher electrical conductivity [11]. The depolarization currents of the field grading sleeve show anomalous behavior.…”

Introductory Chapter: Electrical and Electronic Properties of Materials

“…This has begged many questions regarding the behavior of polyesters under different electrical phenomena, which are yet to be answered. One such question, covered in this book, demands the analysis on behavior of polyester under a DC field [9].…”